Addonics Technologies NAS25HDU2 User Manual page 8

Same procedure applies for the Music and Video folders.
On your Xbox 360, go to "Media" tab, select either Music or Pictures and press A
button of the Xbox console to continue.
Press X button of the Xbox console to change the source and select your
network drive. It should show up as storagexxx and display the folder that you
have set up earlier on your Mini NAS.
Inside the share folder, you can access your picture or music files, depending on
which mode you are currently using. Select the files you would like to see or to
listen, and start playback.
Printer Server